Wahyuni, Lutfi. “EFFECT OF NEBULIZER AND EFFECTIVE COUGH ON THE STATUS OF BREATHING COPD PATIENTS”. Jurnal Keperawatan 4, no. 1 (May 29, 2015): 44-46. Accessed May 4, 2025. https://www.jurnal.stikeswilliambooth.ac.id/index.php/Kep/article/view/187.